Why teiid engine modifies the query condition to "WHERE 1 = 0"

Issue

In a DB, there is a column "a" whoose datatype is NUMBER. I create a VDB including the column, and send a query to the VDB like this:

SELECT * FROM DEMO.TEST WHERE a = 'not good value'

Although the result, 0, is expected value, there is a totally different query in a command log:

SELECT * FROM DEMO.TEST WHERE 1 = 0

Is this expected behavior?